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- B P Abbott, R Abbott, +497 authors A Kutynia
- Physical review letters
- 2016

On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal. The signal sweeps upwards in frequency from 35 to 250 Hz with a peak gravitational-wave strain of 1.0×10(-21). It matches the waveform predicted by general relativity for the… (More)

- B P Abbott, R Abbott, +497 authors J B Lewis
- Physical review letters
- 2016

We report the observation of a gravitational-wave signal produced by the coalescence of two stellar-mass black holes. The signal, GW151226, was observed by the twin detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) on December 26, 2015 at 03:38:53 UTC. The signal was initially identified within 70 s by an online matched-filter… (More)

Vectorial Boolean functions are usually called Substitution Boxes (S-Boxes) and are used as basic component of block ciphers in Cryptography. The ciphers that are Substitution-permutation networks use bijective S-Boxes i.e., Boolean permutations. S-Boxes with low differential uniformity and high nonlinearity are considered as cryptographically strong. In… (More)

- B P Abbott, R Abbott, +497 authors Y Levin
- Physical review letters
- 2016

The LIGO detection of GW150914 provides an unprecedented opportunity to study the two-body motion of a compact-object binary in the large-velocity, highly nonlinear regime, and to witness the final merger of the binary and the excitation of uniquely relativistic modes of the gravitational field. We carry out several investigations to determine whether… (More)

- Herman Isa, Norziana Jamil, Muhammad Reza Z'aba
- SIN
- 2013

A substitution box (s-box) is a nonlinear component function used in most block ciphers. It must fulfill several cryptographic properties such as high nonlinearity, low differential uniformity and complex algebraic expression to resist against linear, differential and interpolation attacks. In this paper, we extend and improve the s-box construction method… (More)

- Herman Isa, Iskandar Bahari, Hasibah Sufian, Muhammad Reza Z'aba
- 2011 7th International Conference on Information…
- 2011

The Advanced Encryption Standard (AES) has been in existence over the last 11 years. It was widely accepted as the de facto standard in many security-related applications such as SSL/TLS, Microsoft BitLocker Drive Encryption, Skype and many others. Recently in 2011, the AES was claimed to be theoretically broken in the single-key attack model using a new… (More)

- B P Abbott, R Abbott, +497 authors N A Lockerbie
- Physical review letters
- 2016

Following a major upgrade, the two advanced detectors of the Laser Interferometer Gravitational-wave Observatory (LIGO) held their first observation run between September 2015 and January 2016. With a strain sensitivity of 10^{-23}/sqrt[Hz] at 100 Hz, the product of observable volume and measurement time exceeded that of all previous runs within the first… (More)

- B P Abbott, R Abbott, +497 authors P D Lasky
- Physical review letters
- 2017

We employ gravitational-wave radiometry to map the stochastic gravitational wave background expected from a variety of contributing mechanisms and test the assumption of isotropy using data from the Advanced Laser Interferometer Gravitational Wave Observatory's (aLIGO) first observing run. We also search for persistent gravitational waves from point sources… (More)

- B P Abbott, R Abbott, +497 authors J R Leong
- Physical review letters
- 2016

On September 14, 2015, the Laser Interferometer Gravitational-Wave Observatory (LIGO) detected a gravitational-wave transient (GW150914); we characterize the properties of the source and its parameters. The data around the time of the event were analyzed coherently across the LIGO network using a suite of accurate waveform models that describe gravitational… (More)

- Herman Isa, Muhammad Reza Z'aba
- SIN
- 2012

In this paper, we present the statistical test of randomness on the Light Encryption Device (LED) Block Cipher. LED is a lightweight block cipher with a 64-bit block size and variable key lengths from 64 to 128 bits (in multiple of 16 bits). The randomness testing was performed using NIST Statistical Test Suite. The tests were performed on reduced rounds of… (More)